above ground swimming pool
				 
					
					
						wall 
						Vertical side enclosing the pool.
				  	
 
					
						upright 
						Vertical part bracing the rim and walls of the pool.
				  	
 
					
						pump 
						Device circulating the water through the skimmer to the filter before returning it to the pool.
				  	
 
					
						filter 
						Device removing and absorbing impurities from the water.
				  	
 
					
						skimmer 
						Device filtering out debris from the surface of the water.